我正在尝试制作一个由我创建的多个应用构建的应用。这个应用程序（My_App_Show）有一个导航抽屉，可以保存可能的应用程序片段。单击抽屉中的一个项目后，它会将相应的片段膨胀到主要活动场所.Holder中。一旦视图出现，我就无法使用任何功能。
public class MyAppShowActivity extends AppCompatActivity implements NavigationDrawerFragment.NavigationDrawerCallbacks {
/**
* Fragment managing the behaviors, interactions and presentation of the navigation drawer.
*/
private NavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in {@link #restoreActionBar()}.
*/
private CharSequence mTitle;
protected static int frag = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_app_show);
mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
// Set up the drawer.
mNavigationDrawerFragment.setUp(R.id.navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout));
}
@Override
public void onNavigationDrawerItemSelected(int position) {
// update the main content by replacing fragments
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.container, PlaceholderFragment.newInstance(position)).commit();
}
public void onSectionAttached(int number) {
switch (number) {
case 0:
frag = 0;
mTitle = getString(R.string.title_section0);
case 1:
frag = 1;
mTitle = getString(R.string.title_section1);
break;
case 2:
frag = 2;
mTitle = getString(R.string.title_section2);
break;
case 3:
frag = 3;
mTitle = getString(R.string.title_section3);
break;
case 4:
frag = 4;
mTitle = getString(R.string.title_section4);
break;
case 5:
frag = 5;
mTitle = getString(R.string.title_section5);
break;
}
}
public void restoreActionBar() {
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (!mNavigationDrawerFragment.isDrawerOpen()) {
// Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate(R.menu.my_app_show, menu);
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = null;
switch (frag) {
case 1:
view = inflater.inflate(R.layout.fragment_activity_my, container, false);
break;
case 2:
view = inflater.inflate(R.layout.fragment_tic_tac_toe, container, false);
break;
case 3:
view = inflater.inflate(R.layout.fragment_d_side_main, container, false);
break;
case 4:
break;
case 5:
view = inflater.inflate(R.layout.fragment_gestures, container, false);
break;
}
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((MyAppShowActivity) activity).onSectionAttached(getArguments().getInt(ARG_SECTION_NUMBER));
}
}
这是我的主要活动，以下是我的第一个＆＃34; app＆＃34;我试图变成一个片段来使用我的新应用程序：
public class MyActivity extends Fragment {
public final static String EXTRA_MESSAGE = "com.mycompany.myfirstapp.MESSAGE";
private OnFragmentInteractionListener mListener;
protected ArrayAdapter adp;
public MyActivity() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ArrayList<OnFragmentInteractionListener> things = new ArrayList<>();
adp = new ArrayAdapter(this.getActivity(), things.size());
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_activity_my, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState){
ListView lv = (ListView) view.findViewById(R.id.navigation_drawer);
lv.setAdapter(adp);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
/** Called when the user clicks the Send button */
public void sendMessage(View view) {
Intent intent = new Intent(this.getActivity(), DisplayMessageActivity.class);
EditText editText = (EditText)this.getActivity().findViewById(R.id.edit_message);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
getActivity().startActivity(intent);
}
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
this.getActivity().getMenuInflater().inflate(R.menu.menu_my, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (OnFragmentInteractionListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
public void onFragmentInteraction(Uri uri);
}
当我运行代码时，一切正常，直到我在编辑文本框中键入消息，然后点击发送消息按钮。错误弹出说; ＆＃34;无法在父级或祖先语句中找到方法sendMessage（View）for android：在视图类android.support.v7.widget.AppCompatButton＆＃34;上定义的onClick属性。
11-08 13:13:40.602 25322-25322/com.example.darnell.my_app_show E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.darnell.my_app_show, PID: 25322
java.lang.IllegalStateException: Could not find method sendMessage(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatButton
at android.support.v7.internal.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:310)
at android.support.v7.internal.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:269)
at android.view.View.performClick(View.java:4764)
at android.view.View$PerformClick.run(View.java:19833)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5290)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
任何人都可以告诉我需要做些什么才能使我的碎片正常运行？
答案 0 :(得分：0)
根据您描述的错误判断，您调用sendMessage传递View参数。但是，代码中的sendMessage()方法不接受任何参数。